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3 years ago

Help me out, please....

Mathematics

2 answers:

alex41 [277]3 years ago

8 0

Answer:

5 radical 3

Step-by-step explanation:

b = √c2 - a2

= √102 - 52

= √75

= 8.66025 = 5√3

melomori [17]3 years ago

4 0

Answer: D

Step-by-step explanation:

Using Pythagoras’ theorem

H^2= O^2 + A^2

H= 10

O= 5

A= x

A^2= H^2 - O^2

x^2= 10^2 - 5^2

x^2= 100 - 25

x^2= 75

x= 75^(1/2)

x= 5(3^(1/2))

x= 5 √3

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Step-by-step explanation:

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2 years ago

What is 2s-4=6 solve please

hjlf

Answer:

s=5

Step-by-step explanation:

2s-4=6

add 4

2s=10

divide by 2

s=5

6 0

3 years ago

Read 2 more answers

Svetradugi [14.3K]

Answer:

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Step-by-step explanation:

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3 years ago

What’s.the perimeter of a square with an area of 49 cm2

Free_Kalibri [48]

Answer:

Step-by-step explanation:

Area of a square =

$s^2$

Perimeter =

$4\times s$

Where s = side

Solve for s using the area

$A =49\\\\49 = s^2\\\\Square\:root \:both\:sides\:of\:the\:equation\\\\\sqrt{49} = \sqrt{s^2} \\\\7 =s\\\\s =7$

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3 years ago

Kristen is 64 inches tall, and she stands 12 feet away from a streetlight. If she casts an 82-inch-long shadow, how tall is the

o-na [289]

Answer:

176.39 inches or

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Step-by-step explanation:

Consider the right triangle made by Kristen, ground and shadow.

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Next consider the right triangle formed by street light, ground upto shadow tip.

The two triangles have common angle of elevation and also another angle as 90 degrees.

Hence the two triangles would be similar

Also if A is the angle made by hypotenuse of both triangles with the ground we have

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$tanx=\frac{h}{82+12(12)}=\frac{h}{226}$

From these two we get

h = height of street light = $\frac{226(64)}{82} =176.39$

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3 years ago